61843349 has 2 divisors, whose sum is σ = 61843350. Its totient is φ = 61843348.

The previous prime is 61843321. The next prime is 61843351. The reversal of 61843349 is 94334816.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36663025 + 25180324 = 6055^2 + 5018^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61843349 is a prime.

It is a Sophie Germain prime.

Together with 61843351, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61843049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30921674 + 30921675.

It is an arithmetic number, because the mean of its divisors is an integer number (30921675).

Almost surely, 2^61843349 is an apocalyptic number.

It is an amenable number.

61843349 is a deficient number, since it is larger than the sum of its proper divisors (1).

61843349 is an equidigital number, since it uses as much as digits as its factorization.

61843349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 38.

The square root of 61843349 is about 7864.0542342993. The cubic root of 61843349 is about 395.4555423717.

The spelling of 61843349 in words is "sixty-one million, eight hundred forty-three thousand, three hundred forty-nine".